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Vishay General Semiconductor - Diodes Division SMBJ8.0D-M3/H
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- Part No.:
- SMBJ8.0D-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ8.0D-M3/H.pdf
- Description:
- TVS DIODE 8VWM 13.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:849
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Product details
Overview
SMBJ8.0D-M3/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, with 8.0 V stand-off voltage (VWM), 9.03–9.69 V breakdown voltage (VBR) at 1 mA, 13.4 V clamping voltage (VC) at 35 A peak pulse current, and 600 W peak pulse power rating per 10/1000 μs waveform-designed to protect MOSFETs and ICs against inductive switching transients in industrial power supplies.
For engineers reviewing the SMBJ8.0D-M3/H datasheet, SMBJ8.0D-M3/H pinout, SMBJ8.0D-M3/H application, or SMBJ8.0D-M3/H equivalent, key selection criteria include unidirectional polarity, ±3.5 % VBR tolerance, low leakage (<500 μA at VWM), M3 halogen-free RoHS-compliant construction, and J-STD-020 MSL Level 1 reflow compatibility up to 260 °C.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuit nodes, conducting only when reverse voltage exceeds VBR to limit transient overvoltage to VC. Its low incremental surge resistance and fast response time ensure effective suppression of ESD and lightning-induced surges without affecting normal signal integrity during VWM operation.
The SMBJ8.0D-M3/H is rated for junction temperatures from –55 °C to +150 °C, with thermal resistance RθJA = 125 °C/W on minimum pad layout and RθJM = 20 °C/W to mounting surface-enabling reliable operation in compact industrial and automotive power modules where board space and thermal management are constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - maximum continuous reverse operating voltage before conduction begins |
| VBR min/max | 9.03 V / 9.69 V at 1 mA - tight ±3.5 % tolerance ensures predictable turn-on across production lots |
| VC @ IPPM | 13.4 V at 35 A - clamping voltage limits downstream component stress during 10/1000 μs surge events |
| PPPM | 600 W - peak pulse power handling capability per standard 10/1000 μs waveform |
| ID @ VWM | <500 μA - low reverse leakage preserves efficiency in battery-powered or high-impedance sensor interfaces |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated assembly and meets UL 94 V-0 flammability |
| MSL Level | Level 1 per J-STD-020 - supports lead-free reflow up to 260 °C peak without preconditioning |
Pinout & Package
Two-terminal unidirectional TVS diode in SMB (DO-214AA) package. Cathode denoted by band-marked end; anode is unmarked end. Matte tin-plated leads meet J-STD-002 solderability and JESD 201 Class 2 whisker resistance requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when V > VBR |
| Anode (unmarked end) | Reference node | Typically tied to system ground or lower-potential rail to complete clamping path |
Key Features
| Feature | Design Value |
|---|---|
| ±3.5 % VBR tolerance | Enables precise overvoltage threshold setting without design margin inflation |
| 600 W PPPM (10/1000 μs) | Handles repetitive surge events in motor drive gate driver protection without degradation |
| Low ID <500 μA at VWM | Minimizes standby power loss in always-on industrial control inputs |
| M3 suffix compliance | Halogens-free, RoHS-compliant, and JESD 201 Class 2 whisker-resistant for long-term reliability |
| MSL Level 1 | Supports single-pass lead-free reflow at 260 °C-no baking required prior to assembly |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of IGBT gate drivers against voltage spikes induced by inductive load switching in 24 V DC motor controllers. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between gate and source to clamp negative transients and prevent gate oxide breakdown. Use Value: 13.4 V clamping voltage ensures gate-source voltage stays within safe operating area of 20 V-rated IGBTs under 35 A surge conditions. | Use Scenario: Surge suppression on LIN bus lines exposed to load dump and jump-start transients in vehicle door modules. IC Role / Device Role / Timing Role: Standoff protection device on bidirectional data line, leveraging unidirectional configuration referenced to chassis ground. Use Value: 8.0 V VWM aligns with 12 V nominal LIN supply while 600 W PPPM withstands ISO 7637-2 Pulse 1 and Pulse 2a waveforms. |
| Telecom Power Supply Inputs | Industrial Sensor Signal Conditioning |
Use Scenario: Input-stage protection of 48 V telecom rectifier modules subjected to lightning-induced surges on AC/DC front-end. IC Role / Device Role / Timing Role: Primary-level TVS on DC output rail to clamp transients before they reach downstream DC/DC converters. Use Value: 9.03–9.69 V VBR allows clean turn-on above ripple envelope while limiting clamped voltage to 13.4 V during 600 W events. | Use Scenario: Protection of analog input pins on 3.3 V microcontrollers interfacing with 0–10 V industrial sensors subject to field wiring ESD. IC Role / Device Role / Timing Role: Low-leakage unidirectional TVS placed between sensor line and MCU VDD/GND to shunt fast transients. Use Value: Sub-500 μA leakage at 8.0 V VWM prevents signal offset errors in high-impedance sensor bridges and maintains ADC accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A-M3/H | Same VWM/VBR/VC specs but uses "A" marking code instead of "F"; identical electrical and mechanical characteristics | No functional difference; alternate marking variant for same unidirectional 8.0 V TVS | Select SMBJ8.0A-M3/H if legacy BOM references "A" code; otherwise SMBJ8.0D-M3/H is preferred per current Vishay documentation |
| P6SMB8.0A | Same SMB package and 8.0 V VWM, but 600 W PPPM rating derived from different test methodology; VBR tolerance ±5 % vs. ±3.5 % | Lower VBR precision may require larger design margin in critical clamping applications | Use P6SMB8.0A only where tighter VBR tolerance is not required and existing qualification covers its alternate surge test profile |
Compared with SMBJ8.0A-M3/H, the SMBJ8.0D-M3/H offers identical performance with updated marking; versus P6SMB8.0A, it delivers superior VBR consistency and verified M3 process compliance-making it preferable for new designs requiring repeatable clamping thresholds and industrial-grade reliability.
Availability
SMBJ8.0D-M3/H is available at Aetrix Electronics and suitable for industrial motor drives, automotive body electronics, and telecom power supply designs requiring stable component supply, consistent M3-compliant manufacturing, and guaranteed 600 W transient immunity.
Supply support for SMBJ8.0D-M3/H includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on high-reliability industrial and automotive applications.
The SMBJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for robust, surface-mount transient suppression in harsh environments where repeatable clamping, low leakage, and MSL Level 1 reflow compatibility are mandatory.
FAQ
What is the breakdown voltage range for SMBJ8.0D-M3/H?
The SMBJ8.0D-M3/H has a specified breakdown voltage (VBR) range of 9.03 V to 9.69 V at 1 mA test current, corresponding to a ±3.5 % tolerance around the nominal 9.36 V typical value. This tight tolerance is confirmed in Vishay's Document Number 87606, Revision 09-Jan-2024, and directly impacts clamping predictability in precision protection circuits. The SMBJ8.0D-M3/H must be selected where consistent turn-on behavior across temperature and production lot is required.
Is SMBJ8.0D-M3/H unidirectional or bidirectional?
SMBJ8.0D-M3/H is a unidirectional transient voltage suppressor, indicated by the "D" suffix (as opposed to "CD" for bidirectional variants). Its cathode is marked with a band, and it conducts only when reverse-biased beyond VBR-making it suitable for DC rail protection where polarity is fixed. This configuration is explicitly defined in the Vishay SMBJ5.0D–SMBJ188D datasheet, and the SMBJ8.0D-M3/H does not support symmetrical clamping in both directions.
What is the clamping voltage of SMBJ8.0D-M3/H at its rated peak pulse current?
The SMBJ8.0D-M3/H exhibits a maximum clamping voltage (VC) of 13.4 V at its rated peak pulse current (IPPM) of 35 A, measured using the standardized 10/1000 μs double-exponential waveform. This value is critical for ensuring downstream components remain within safe operating voltage limits during surge events, and it is validated per ANSI/IEEE C62.35. The SMBJ8.0D-M3/H achieves this with low incremental surge resistance, contributing to stable clamping performance across repeated transients.
Does SMBJ8.0D-M3/H meet RoHS and halogen-free requirements?
Yes, SMBJ8.0D-M3/H carries the "M3" suffix, which denotes halogen-free, RoHS-compliant construction and industrial-grade qualification per Vishay's material categorization standards. It also passes JESD 201 Class 2 whisker testing and meets UL 94 V-0 flammability for the molding compound. These attributes are documented in the mechanical data section of the official SMBJ series datasheet (Document Number 87606), confirming the SMBJ8.0D-M3/H is suitable for environmentally regulated industrial and automotive deployments.
What is the thermal resistance of SMBJ8.0D-M3/H under standard mounting conditions?
The SMBJ8.0D-M3/H has a typical junction-to-ambient thermal resistance (RθJA) of 125 °C/W when mounted on the minimum recommended PCB pad layout, and 100 °C/W on a 5.0 mm × 5.0 mm copper pad. Its junction-to-mount (RθJM) is 20 °C/W. These values-listed in the Thermal Characteristics table of Vishay's Document 87606-define safe power derating curves and confirm the SMBJ8.0D-M3/H can sustain 1.0 W at TA = 25 °C and 5.0 W at TM = 50 °C with appropriate thermal design.
SMBJ8.0D-M3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 9.03V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 44.8A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ8.0D-M3/H FAQ
1.How can I place an order for SMBJ8.0D-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ8.0D-M3/H on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMBJ8.0D-M3/H reliable?
The price and inventory of SMBJ8.0D-M3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ8.0D-M3/H is usually 5 days.
3.What payment methods are accepted for SMBJ8.0D-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ8.0D-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ8.0D-M3/H?
SMBJ8.0D-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ8.0D-M3/H order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMBJ8.0D-M3/H?
For technical support, including SMBJ8.0D-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ8.0D-M3/H requirements.
6.How does Aetrix verify that SMBJ8.0D-M3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ8.0D-M3/H products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMBJ8.0D-M3/H meets industry standards.
7.What is the process for return or replacement of SMBJ8.0D-M3/H?
All SMBJ8.0D-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ8.0D-M3/H, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMBJ8.0D-M3/H part is unused and in its original packaging.
Return procedure for SMBJ8.0D-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ8.0D-M3/H Tags
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